1883. Botany. 657 
published in Grevil/ea for March, 1883. The British species are 
arranged under nine genera, as follows: 
Uromyces, with twenty-three species. Five tribes are recog- 
nized, viz: 1. Lepturomyces; 2. Micruromyces, in both of which 
teleutospores only occur; 3. Hemiuromyces, with uredo and 
teleutospores ; 4. Uromycopsis, with ecidia and teleutospores ; 5. 
uromyces, with æcidia, uredo and teleutospores. The last is 
again subdivided into (1) species with all three spore forms on 
the same host plant, and (2) those with æcidia on one host and 
uredo and teleutospores on another. 
Puccinia, with sixty-six species. Five tribes are recognized 
here also, viz: 1. Leptopuccinia; 2. Micropuccinia, both wi 
teleutospores only; 3. Hemipuccinia, with uredo and teleuto- 
Spores; 4. Pucciniopsis, with zcidia and teleutospores; 5. Eupuc- 
cinia, with æcidia, uredo and teleutospores. This tribe is divided 
into two sub-tribes as in Uromyces. e hetercecismal species 
are P. graminis of wheat and various grasses, with æcidia and 
on barberry ; P, rubigo-vera of barley and various grasses (and 
wheat in this country), with zcidia on Lycopsis, Echium and 
Symphytum ; P. coronata of various grasses (oats in this country) 
with æcidia on Rhamnus; Z. mohnie of Molinia, with æcidia on 
ra 
midiopsis, with æcidia and teleutospores, and (2) Euphragmid- 
lum, with ecidia, uredo and teleutospores. 
Cronartium, with a single species. 
mT Micromelampsora, with teleutospores only ; 2. Hemimel- 
ampsora, having uredo and teleutospores; 3. Melampsoropsis, 
